Whatever you use for ranking, I'd compare that to the ADP to find value picks. If you have someone projected at 8th round value, and you see he's being drafted in the 12th, that's undervalued and you can target him in the 9th or later.
Excellent ADP thread here. viewtopic.php?t=364592
I imported that list into Excel so I could filter by position. Gives me a good overview on where players are going and how I can tier them.
For example it looks like 8 2b are going in the first 8 rounds, and then none until the 12th. So in a 12 team league 3 quarter of all teams will have their 2b taken by the 9th. If you didn't get one of them, you don't have to worry about it until later. It'll also tell you if you want to reach, when you need to do it, or if you would be satisfied with one of the later picks. Me I'm not a real big fan of Uggla with his low avg (ADP 6.74), or the inconsistent Cano (7.76). If I want a top 2b I've got to make my move by the 4th or 5th or I'm out. At that point I'd probably wait for Kelly Johnson in the 14th or make do with whoever is left.